Description:

The Control Concepts Prox Switch is a micro-controlled, field adjustable, multi-setpoint speed / rate monitor that provides 4 character alpha numeric visual indication and relay ouput. The unit offers many versatile features that provide flexibility in application and confidence in sensing. Full diagnostic functions including alarm condition (over-speed or under-speed), auto scaling (eliminates out of range parameters) and error detection. Features include Overspeed and Underspeed simultaneous monitoring, programmable relay action and non-contacting sensing. This unit is packaged in a NEMA 4/5 enclosure with a transparent Lexan cover for dust and moisture protection.

Operating Theory:

The speed monitor unit utilizes a microcontroller and pro-prietary internal software routine to precisely monitor the speed or rate of the process. The pulses from a ferrous target are converted to an electrical signal. The micro-controller calculates the integral time between the pulses, then compares that value mathematically to the pre-programmed settings selected by the user. The micro-controller has the ability to execute 4 million instructions per second. The fast execution allows it to accurately monitor very fast or very slow speed / rate conditions. The microcontroller also provides flexibility while offering many options found in high-priced computer controlled systems.

Top 10 Advantages over other speed switches:

1) Huge sensing range (12 - 30,000 RPM based on 1 pulse per revolution; 0.5 - 7200 RPM based on 6 pulses per revolution).

2) Ability to sense both Underspeed (20 - 99% of running speed) and Overspeed (101 - 199% of running speed).

3) Common 120 VAC standard input voltage, 240 VAC, 12VDC and 24VDC options at no additional cost.

4) Easy programming and in the field speed adjusting.

5) Four character LED readout which shows alarm situation in low light environments, without opening case.

6) Gasketed, epoxy coated, cast aluminum housing with Lexan cover.

7) Not directly coupled to the shaft where coupling can fatigue and break.

8) Uses standard 10 - 30VDC NPN prox sensors.

9) Can pickup any ferrous material for a pulse; does not have to be a magnet.

10) Huge sensing range (12 - 30,000 RPM based on 1 pulse per rev; 0.5 - 7200 RPM based on 6 pulses per rev).

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Product Info Sheet: Printable Acrobat .PDF

Product Overview Sheet: Printable Acrobat .PDF

PRX 120 Manual & Wiring Diagram: Printable Acrobat .PDF